Status of the GroundBIRD Telescope

¹ Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34051
² Instituto de Astrofísica de Canarias, E38205 - La Laguna, Tenerife, Canary Islands, Spain
³ Tohoku University, Aramaki Aza Aoba 6-3, Aoba-ku, Sendai, 980-8578, Japan
⁴ Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
⁵ TU Delft, 2600 AA Delft, Netherland
⁶ RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
⁷ Saitama University, Saitama-shi 338-8570, Japan‘
⁸ Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Korea
⁹ The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
¹⁰ Advanced Technology Center, National Astronomical Observatory of Japan, Tokyo 181-8588
¹¹ Department of Physics, Kyoto University, Kyoto 606-8501

^* e-mail: eunil@hep.korea.ac.kr

Published online: 9 January 2018

Abstract

Our understanding of physics at very early Universe, as early as 10⁻³⁵ s after the Big Bang, relies on the scenario known as the inflationary cosmology. Inflation predicts a particular polarization pattern in the cosmic microwave background, known as the B-mode yet the strength of such polarization pattern is extremely weak. To search for the B-mode of the polarization in the cosmic microwave background, we are constructing an off-axis rotating telescope to mitigate systematic effects as well as to maximize the sky coverage of the observation. We will discuss the present status of the GroundBIRD telescope.